3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of Libav.
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * Libav is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 #include "libavutil/attributes.h"
30 #include "libavutil/avassert.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/channel_layout.h"
33 #include "libavutil/crc.h"
34 #include "libavutil/frame.h"
35 #include "libavutil/internal.h"
36 #include "libavutil/mathematics.h"
37 #include "libavutil/pixdesc.h"
38 #include "libavutil/imgutils.h"
39 #include "libavutil/samplefmt.h"
40 #include "libavutil/dict.h"
42 #include "libavutil/opt.h"
44 #include "mpegvideo.h"
47 #include "bytestream.h"
54 static int volatile entangled_thread_counter = 0;
55 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op);
56 static void *codec_mutex;
57 static void *avformat_mutex;
59 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
62 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
67 av_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
69 memset((uint8_t *)*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
72 /* encoder management */
73 static AVCodec *first_avcodec = NULL;
75 AVCodec *av_codec_next(const AVCodec *c)
83 static av_cold void avcodec_init(void)
85 static int initialized = 0;
92 ff_me_cmp_init_static();
95 int av_codec_is_encoder(const AVCodec *codec)
97 return codec && (codec->encode_sub || codec->encode2);
100 int av_codec_is_decoder(const AVCodec *codec)
102 return codec && codec->decode;
105 av_cold void avcodec_register(AVCodec *codec)
115 if (codec->init_static_data)
116 codec->init_static_data(codec);
120 unsigned avcodec_get_edge_width(void)
126 #if FF_API_SET_DIMENSIONS
127 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
129 ff_set_dimensions(s, width, height);
133 int ff_set_dimensions(AVCodecContext *s, int width, int height)
135 int ret = av_image_check_size(width, height, 0, s);
139 s->width = s->coded_width = width;
140 s->height = s->coded_height = height;
145 int ff_set_sar(AVCodecContext *avctx, AVRational sar)
147 int ret = av_image_check_sar(avctx->width, avctx->height, sar);
150 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
152 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
155 avctx->sample_aspect_ratio = sar;
160 int ff_side_data_update_matrix_encoding(AVFrame *frame,
161 enum AVMatrixEncoding matrix_encoding)
163 AVFrameSideData *side_data;
164 enum AVMatrixEncoding *data;
166 side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
168 side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
169 sizeof(enum AVMatrixEncoding));
172 return AVERROR(ENOMEM);
174 data = (enum AVMatrixEncoding*)side_data->data;
175 *data = matrix_encoding;
180 #if HAVE_SIMD_ALIGN_16
181 # define STRIDE_ALIGN 16
183 # define STRIDE_ALIGN 8
186 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
187 int linesize_align[AV_NUM_DATA_POINTERS])
193 switch (s->pix_fmt) {
194 case AV_PIX_FMT_YUV420P:
195 case AV_PIX_FMT_YUYV422:
196 case AV_PIX_FMT_YVYU422:
197 case AV_PIX_FMT_UYVY422:
198 case AV_PIX_FMT_YUV422P:
199 case AV_PIX_FMT_YUV440P:
200 case AV_PIX_FMT_YUV444P:
201 case AV_PIX_FMT_GBRP:
202 case AV_PIX_FMT_GRAY8:
203 case AV_PIX_FMT_GRAY16BE:
204 case AV_PIX_FMT_GRAY16LE:
205 case AV_PIX_FMT_YUVJ420P:
206 case AV_PIX_FMT_YUVJ422P:
207 case AV_PIX_FMT_YUVJ440P:
208 case AV_PIX_FMT_YUVJ444P:
209 case AV_PIX_FMT_YUVA420P:
210 case AV_PIX_FMT_YUVA422P:
211 case AV_PIX_FMT_YUVA444P:
212 case AV_PIX_FMT_YUV420P9LE:
213 case AV_PIX_FMT_YUV420P9BE:
214 case AV_PIX_FMT_YUV420P10LE:
215 case AV_PIX_FMT_YUV420P10BE:
216 case AV_PIX_FMT_YUV422P9LE:
217 case AV_PIX_FMT_YUV422P9BE:
218 case AV_PIX_FMT_YUV422P10LE:
219 case AV_PIX_FMT_YUV422P10BE:
220 case AV_PIX_FMT_YUVA422P10LE:
221 case AV_PIX_FMT_YUVA422P10BE:
222 case AV_PIX_FMT_YUV444P9LE:
223 case AV_PIX_FMT_YUV444P9BE:
224 case AV_PIX_FMT_YUV444P10LE:
225 case AV_PIX_FMT_YUV444P10BE:
226 case AV_PIX_FMT_YUVA444P10LE:
227 case AV_PIX_FMT_YUVA444P10BE:
228 case AV_PIX_FMT_GBRP9LE:
229 case AV_PIX_FMT_GBRP9BE:
230 case AV_PIX_FMT_GBRP10LE:
231 case AV_PIX_FMT_GBRP10BE:
232 w_align = 16; //FIXME assume 16 pixel per macroblock
233 h_align = 16 * 2; // interlaced needs 2 macroblocks height
235 case AV_PIX_FMT_YUV411P:
236 case AV_PIX_FMT_UYYVYY411:
240 case AV_PIX_FMT_YUV410P:
241 if (s->codec_id == AV_CODEC_ID_SVQ1) {
245 case AV_PIX_FMT_RGB555:
246 if (s->codec_id == AV_CODEC_ID_RPZA) {
250 case AV_PIX_FMT_PAL8:
251 case AV_PIX_FMT_BGR8:
252 case AV_PIX_FMT_RGB8:
253 if (s->codec_id == AV_CODEC_ID_SMC) {
258 case AV_PIX_FMT_BGR24:
259 if ((s->codec_id == AV_CODEC_ID_MSZH) ||
260 (s->codec_id == AV_CODEC_ID_ZLIB)) {
271 *width = FFALIGN(*width, w_align);
272 *height = FFALIGN(*height, h_align);
273 if (s->codec_id == AV_CODEC_ID_H264)
274 // some of the optimized chroma MC reads one line too much
277 for (i = 0; i < 4; i++)
278 linesize_align[i] = STRIDE_ALIGN;
281 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
283 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
284 int chroma_shift = desc->log2_chroma_w;
285 int linesize_align[AV_NUM_DATA_POINTERS];
288 avcodec_align_dimensions2(s, width, height, linesize_align);
289 align = FFMAX(linesize_align[0], linesize_align[3]);
290 linesize_align[1] <<= chroma_shift;
291 linesize_align[2] <<= chroma_shift;
292 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
293 *width = FFALIGN(*width, align);
296 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
297 enum AVSampleFormat sample_fmt, const uint8_t *buf,
298 int buf_size, int align)
300 int ch, planar, needed_size, ret = 0;
302 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
303 frame->nb_samples, sample_fmt,
305 if (buf_size < needed_size)
306 return AVERROR(EINVAL);
308 planar = av_sample_fmt_is_planar(sample_fmt);
309 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
310 if (!(frame->extended_data = av_mallocz(nb_channels *
311 sizeof(*frame->extended_data))))
312 return AVERROR(ENOMEM);
314 frame->extended_data = frame->data;
317 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
318 buf, nb_channels, frame->nb_samples,
319 sample_fmt, align)) < 0) {
320 if (frame->extended_data != frame->data)
321 av_free(frame->extended_data);
324 if (frame->extended_data != frame->data) {
325 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
326 frame->data[ch] = frame->extended_data[ch];
332 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
334 FramePool *pool = avctx->internal->pool;
337 switch (avctx->codec_type) {
338 case AVMEDIA_TYPE_VIDEO: {
341 int w = frame->width;
342 int h = frame->height;
343 int tmpsize, unaligned;
345 if (pool->format == frame->format &&
346 pool->width == frame->width && pool->height == frame->height)
349 avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
352 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
353 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
354 av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
355 // increase alignment of w for next try (rhs gives the lowest bit set in w)
359 for (i = 0; i < 4; i++)
360 unaligned |= picture.linesize[i] % pool->stride_align[i];
363 tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
364 NULL, picture.linesize);
368 for (i = 0; i < 3 && picture.data[i + 1]; i++)
369 size[i] = picture.data[i + 1] - picture.data[i];
370 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
372 for (i = 0; i < 4; i++) {
373 av_buffer_pool_uninit(&pool->pools[i]);
374 pool->linesize[i] = picture.linesize[i];
376 pool->pools[i] = av_buffer_pool_init(size[i] + 16, NULL);
377 if (!pool->pools[i]) {
378 ret = AVERROR(ENOMEM);
383 pool->format = frame->format;
384 pool->width = frame->width;
385 pool->height = frame->height;
389 case AVMEDIA_TYPE_AUDIO: {
390 int ch = av_get_channel_layout_nb_channels(frame->channel_layout);
391 int planar = av_sample_fmt_is_planar(frame->format);
392 int planes = planar ? ch : 1;
394 if (pool->format == frame->format && pool->planes == planes &&
395 pool->channels == ch && frame->nb_samples == pool->samples)
398 av_buffer_pool_uninit(&pool->pools[0]);
399 ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
400 frame->nb_samples, frame->format, 0);
404 pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
405 if (!pool->pools[0]) {
406 ret = AVERROR(ENOMEM);
410 pool->format = frame->format;
411 pool->planes = planes;
413 pool->samples = frame->nb_samples;
416 default: av_assert0(0);
420 for (i = 0; i < 4; i++)
421 av_buffer_pool_uninit(&pool->pools[i]);
423 pool->planes = pool->channels = pool->samples = 0;
424 pool->width = pool->height = 0;
428 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
430 FramePool *pool = avctx->internal->pool;
431 int planes = pool->planes;
434 frame->linesize[0] = pool->linesize[0];
436 if (planes > AV_NUM_DATA_POINTERS) {
437 frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data));
438 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
439 frame->extended_buf = av_mallocz(frame->nb_extended_buf *
440 sizeof(*frame->extended_buf));
441 if (!frame->extended_data || !frame->extended_buf) {
442 av_freep(&frame->extended_data);
443 av_freep(&frame->extended_buf);
444 return AVERROR(ENOMEM);
447 frame->extended_data = frame->data;
449 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
450 frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
453 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
455 for (i = 0; i < frame->nb_extended_buf; i++) {
456 frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
457 if (!frame->extended_buf[i])
459 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
462 if (avctx->debug & FF_DEBUG_BUFFERS)
463 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
467 av_frame_unref(frame);
468 return AVERROR(ENOMEM);
471 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
473 FramePool *pool = s->internal->pool;
477 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
481 memset(pic->data, 0, sizeof(pic->data));
482 pic->extended_data = pic->data;
484 for (i = 0; i < 4 && pool->pools[i]; i++) {
485 pic->linesize[i] = pool->linesize[i];
487 pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
491 pic->data[i] = pic->buf[i]->data;
493 for (; i < AV_NUM_DATA_POINTERS; i++) {
495 pic->linesize[i] = 0;
497 if (pic->data[1] && !pic->data[2])
498 avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
500 if (s->debug & FF_DEBUG_BUFFERS)
501 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
506 return AVERROR(ENOMEM);
509 int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
513 if ((ret = update_frame_pool(avctx, frame)) < 0)
516 #if FF_API_GET_BUFFER
517 FF_DISABLE_DEPRECATION_WARNINGS
518 frame->type = FF_BUFFER_TYPE_INTERNAL;
519 FF_ENABLE_DEPRECATION_WARNINGS
522 switch (avctx->codec_type) {
523 case AVMEDIA_TYPE_VIDEO:
524 return video_get_buffer(avctx, frame);
525 case AVMEDIA_TYPE_AUDIO:
526 return audio_get_buffer(avctx, frame);
532 #if FF_API_GET_BUFFER
533 FF_DISABLE_DEPRECATION_WARNINGS
534 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
536 return avcodec_default_get_buffer2(avctx, frame, 0);
539 typedef struct CompatReleaseBufPriv {
540 AVCodecContext avctx;
542 } CompatReleaseBufPriv;
544 static void compat_free_buffer(void *opaque, uint8_t *data)
546 CompatReleaseBufPriv *priv = opaque;
547 if (priv->avctx.release_buffer)
548 priv->avctx.release_buffer(&priv->avctx, &priv->frame);
552 static void compat_release_buffer(void *opaque, uint8_t *data)
554 AVBufferRef *buf = opaque;
555 av_buffer_unref(&buf);
557 FF_ENABLE_DEPRECATION_WARNINGS
560 int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
562 AVPacket *pkt = avctx->internal->pkt;
565 AVFrameSideData *frame_sd;
567 frame->color_primaries = avctx->color_primaries;
568 frame->color_trc = avctx->color_trc;
569 frame->colorspace = avctx->colorspace;
570 frame->color_range = avctx->color_range;
571 frame->chroma_location = avctx->chroma_sample_location;
573 frame->reordered_opaque = avctx->reordered_opaque;
575 frame->pkt_pts = AV_NOPTS_VALUE;
579 frame->pkt_pts = pkt->pts;
581 /* copy the replaygain data to the output frame */
582 packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_REPLAYGAIN, &size);
584 frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_REPLAYGAIN, size);
586 return AVERROR(ENOMEM);
588 memcpy(frame_sd->data, packet_sd, size);
590 /* copy the displaymatrix to the output frame */
591 packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size);
593 frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_DISPLAYMATRIX, size);
595 return AVERROR(ENOMEM);
597 memcpy(frame_sd->data, packet_sd, size);
599 /* copy the stereo3d format to the output frame */
600 packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_STEREO3D, &size);
602 frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_STEREO3D, size);
604 return AVERROR(ENOMEM);
606 memcpy(frame_sd->data, packet_sd, size);
612 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
614 const AVHWAccel *hwaccel = avctx->hwaccel;
615 int override_dimensions = 1;
618 switch (avctx->codec_type) {
619 case AVMEDIA_TYPE_VIDEO:
620 if (frame->width <= 0 || frame->height <= 0) {
621 frame->width = FFMAX(avctx->width, avctx->coded_width);
622 frame->height = FFMAX(avctx->height, avctx->coded_height);
623 override_dimensions = 0;
625 if (frame->format < 0)
626 frame->format = avctx->pix_fmt;
627 if (!frame->sample_aspect_ratio.num)
628 frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
630 if (av_image_check_sar(frame->width, frame->height,
631 frame->sample_aspect_ratio) < 0) {
632 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
633 frame->sample_aspect_ratio.num,
634 frame->sample_aspect_ratio.den);
635 frame->sample_aspect_ratio = (AVRational){ 0, 1 };
638 if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
641 case AVMEDIA_TYPE_AUDIO:
642 if (!frame->sample_rate)
643 frame->sample_rate = avctx->sample_rate;
644 if (frame->format < 0)
645 frame->format = avctx->sample_fmt;
646 if (!frame->channel_layout) {
647 if (avctx->channel_layout) {
648 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
650 av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
652 return AVERROR(EINVAL);
655 frame->channel_layout = avctx->channel_layout;
657 if (avctx->channels > FF_SANE_NB_CHANNELS) {
658 av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
660 return AVERROR(ENOSYS);
663 frame->channel_layout = av_get_default_channel_layout(avctx->channels);
664 if (!frame->channel_layout)
665 frame->channel_layout = (1ULL << avctx->channels) - 1;
669 default: return AVERROR(EINVAL);
672 ret = ff_decode_frame_props(avctx, frame);
676 if (hwaccel && hwaccel->alloc_frame) {
677 ret = hwaccel->alloc_frame(avctx, frame);
681 #if FF_API_GET_BUFFER
682 FF_DISABLE_DEPRECATION_WARNINGS
684 * Wrap an old get_buffer()-allocated buffer in an bunch of AVBuffers.
685 * We wrap each plane in its own AVBuffer. Each of those has a reference to
686 * a dummy AVBuffer as its private data, unreffing it on free.
687 * When all the planes are freed, the dummy buffer's free callback calls
690 if (avctx->get_buffer) {
691 CompatReleaseBufPriv *priv = NULL;
692 AVBufferRef *dummy_buf = NULL;
695 if (flags & AV_GET_BUFFER_FLAG_REF)
696 frame->reference = 1;
698 ret = avctx->get_buffer(avctx, frame);
702 /* return if the buffers are already set up
703 * this would happen e.g. when a custom get_buffer() calls
704 * avcodec_default_get_buffer
709 priv = av_mallocz(sizeof(*priv));
711 ret = AVERROR(ENOMEM);
714 priv->avctx = *avctx;
715 priv->frame = *frame;
717 dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
719 ret = AVERROR(ENOMEM);
723 #define WRAP_PLANE(ref_out, data, data_size) \
725 AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
727 ret = AVERROR(ENOMEM); \
730 ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
733 av_frame_unref(frame); \
734 ret = AVERROR(ENOMEM); \
739 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
740 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
742 planes = av_pix_fmt_count_planes(frame->format);
743 /* workaround for AVHWAccel plane count of 0, buf[0] is used as
744 check for allocated buffers: make libavcodec happy */
745 if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
747 if (!desc || planes <= 0) {
748 ret = AVERROR(EINVAL);
752 for (i = 0; i < planes; i++) {
753 int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
754 int plane_size = (frame->height >> v_shift) * frame->linesize[i];
756 WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
759 int planar = av_sample_fmt_is_planar(frame->format);
760 planes = planar ? avctx->channels : 1;
762 if (planes > FF_ARRAY_ELEMS(frame->buf)) {
763 frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
764 frame->extended_buf = av_malloc(sizeof(*frame->extended_buf) *
765 frame->nb_extended_buf);
766 if (!frame->extended_buf) {
767 ret = AVERROR(ENOMEM);
772 for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
773 WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
775 for (i = 0; i < frame->nb_extended_buf; i++)
776 WRAP_PLANE(frame->extended_buf[i],
777 frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
781 av_buffer_unref(&dummy_buf);
783 frame->width = avctx->width;
784 frame->height = avctx->height;
789 avctx->release_buffer(avctx, frame);
791 av_buffer_unref(&dummy_buf);
794 FF_ENABLE_DEPRECATION_WARNINGS
797 ret = avctx->get_buffer2(avctx, frame, flags);
800 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
801 frame->width = avctx->width;
802 frame->height = avctx->height;
808 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
813 av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
816 return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
818 if (av_frame_is_writable(frame))
819 return ff_decode_frame_props(avctx, frame);
821 tmp = av_frame_alloc();
823 return AVERROR(ENOMEM);
825 av_frame_move_ref(tmp, frame);
827 ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
833 av_frame_copy(frame, tmp);
839 #if FF_API_GET_BUFFER
840 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
845 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
852 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
856 for (i = 0; i < count; i++) {
857 int r = func(c, (char *)arg + i * size);
864 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
868 for (i = 0; i < count; i++) {
869 int r = func(c, arg, i, 0);
876 static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
878 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
879 return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
882 enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
884 while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
889 static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
890 enum AVPixelFormat pix_fmt)
892 AVHWAccel *hwaccel = NULL;
894 while ((hwaccel = av_hwaccel_next(hwaccel)))
895 if (hwaccel->id == codec_id
896 && hwaccel->pix_fmt == pix_fmt)
902 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
904 const AVPixFmtDescriptor *desc;
905 enum AVPixelFormat ret = avctx->get_format(avctx, fmt);
907 desc = av_pix_fmt_desc_get(ret);
909 return AV_PIX_FMT_NONE;
911 if (avctx->hwaccel && avctx->hwaccel->uninit)
912 avctx->hwaccel->uninit(avctx);
913 av_freep(&avctx->internal->hwaccel_priv_data);
914 avctx->hwaccel = NULL;
916 if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL) {
920 hwaccel = find_hwaccel(avctx->codec_id, ret);
922 av_log(avctx, AV_LOG_ERROR,
923 "Could not find an AVHWAccel for the pixel format: %s",
925 return AV_PIX_FMT_NONE;
928 if (hwaccel->priv_data_size) {
929 avctx->internal->hwaccel_priv_data = av_mallocz(hwaccel->priv_data_size);
930 if (!avctx->internal->hwaccel_priv_data)
931 return AV_PIX_FMT_NONE;
935 err = hwaccel->init(avctx);
937 av_freep(&avctx->internal->hwaccel_priv_data);
938 return AV_PIX_FMT_NONE;
941 avctx->hwaccel = hwaccel;
947 #if FF_API_AVFRAME_LAVC
948 void avcodec_get_frame_defaults(AVFrame *frame)
950 if (frame->extended_data != frame->data)
951 av_freep(&frame->extended_data);
953 memset(frame, 0, sizeof(AVFrame));
955 frame->pts = AV_NOPTS_VALUE;
956 frame->key_frame = 1;
957 frame->sample_aspect_ratio = (AVRational) {0, 1 };
958 frame->format = -1; /* unknown */
959 frame->extended_data = frame->data;
962 AVFrame *avcodec_alloc_frame(void)
964 AVFrame *frame = av_mallocz(sizeof(AVFrame));
969 FF_DISABLE_DEPRECATION_WARNINGS
970 avcodec_get_frame_defaults(frame);
971 FF_ENABLE_DEPRECATION_WARNINGS
976 void avcodec_free_frame(AVFrame **frame)
978 av_frame_free(frame);
982 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
985 AVDictionary *tmp = NULL;
987 if (avcodec_is_open(avctx))
990 if ((!codec && !avctx->codec)) {
991 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
992 return AVERROR(EINVAL);
994 if ((codec && avctx->codec && codec != avctx->codec)) {
995 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
996 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
997 return AVERROR(EINVAL);
1000 codec = avctx->codec;
1002 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1003 return AVERROR(EINVAL);
1006 av_dict_copy(&tmp, *options, 0);
1008 /* If there is a user-supplied mutex locking routine, call it. */
1010 if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1014 entangled_thread_counter++;
1015 if (entangled_thread_counter != 1) {
1016 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1021 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1022 if (!avctx->internal) {
1023 ret = AVERROR(ENOMEM);
1027 avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1028 if (!avctx->internal->pool) {
1029 ret = AVERROR(ENOMEM);
1033 avctx->internal->to_free = av_frame_alloc();
1034 if (!avctx->internal->to_free) {
1035 ret = AVERROR(ENOMEM);
1039 if (codec->priv_data_size > 0) {
1040 if (!avctx->priv_data) {
1041 avctx->priv_data = av_mallocz(codec->priv_data_size);
1042 if (!avctx->priv_data) {
1043 ret = AVERROR(ENOMEM);
1046 if (codec->priv_class) {
1047 *(const AVClass **)avctx->priv_data = codec->priv_class;
1048 av_opt_set_defaults(avctx->priv_data);
1051 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1054 avctx->priv_data = NULL;
1056 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1059 if (avctx->coded_width && avctx->coded_height && !avctx->width && !avctx->height)
1060 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1061 else if (avctx->width && avctx->height)
1062 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1066 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1067 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1068 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1069 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
1070 ff_set_dimensions(avctx, 0, 0);
1073 if (avctx->width > 0 && avctx->height > 0) {
1074 if (av_image_check_sar(avctx->width, avctx->height,
1075 avctx->sample_aspect_ratio) < 0) {
1076 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1077 avctx->sample_aspect_ratio.num,
1078 avctx->sample_aspect_ratio.den);
1079 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1083 /* if the decoder init function was already called previously,
1084 * free the already allocated subtitle_header before overwriting it */
1085 if (av_codec_is_decoder(codec))
1086 av_freep(&avctx->subtitle_header);
1088 if (avctx->channels > FF_SANE_NB_CHANNELS) {
1089 ret = AVERROR(EINVAL);
1093 avctx->codec = codec;
1094 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1095 avctx->codec_id == AV_CODEC_ID_NONE) {
1096 avctx->codec_type = codec->type;
1097 avctx->codec_id = codec->id;
1099 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1100 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1101 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
1102 ret = AVERROR(EINVAL);
1105 avctx->frame_number = 0;
1107 if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1108 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1109 ret = AVERROR_EXPERIMENTAL;
1113 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1114 (!avctx->time_base.num || !avctx->time_base.den)) {
1115 avctx->time_base.num = 1;
1116 avctx->time_base.den = avctx->sample_rate;
1120 ret = ff_thread_init(avctx);
1125 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1126 avctx->thread_count = 1;
1128 if (av_codec_is_encoder(avctx->codec)) {
1130 if (avctx->codec->sample_fmts) {
1131 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1132 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1134 if (avctx->channels == 1 &&
1135 av_get_planar_sample_fmt(avctx->sample_fmt) ==
1136 av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
1137 avctx->sample_fmt = avctx->codec->sample_fmts[i];
1141 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1142 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
1143 ret = AVERROR(EINVAL);
1147 if (avctx->codec->pix_fmts) {
1148 for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1149 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1151 if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
1152 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
1153 ret = AVERROR(EINVAL);
1157 if (avctx->codec->supported_samplerates) {
1158 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1159 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1161 if (avctx->codec->supported_samplerates[i] == 0) {
1162 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
1163 ret = AVERROR(EINVAL);
1167 if (avctx->codec->channel_layouts) {
1168 if (!avctx->channel_layout) {
1169 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
1171 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1172 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1174 if (avctx->codec->channel_layouts[i] == 0) {
1175 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
1176 ret = AVERROR(EINVAL);
1181 if (avctx->channel_layout && avctx->channels) {
1182 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
1183 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
1184 ret = AVERROR(EINVAL);
1187 } else if (avctx->channel_layout) {
1188 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1191 if (!avctx->rc_initial_buffer_occupancy)
1192 avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1195 if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
1196 ret = avctx->codec->init(avctx);
1202 if (av_codec_is_decoder(avctx->codec)) {
1203 /* validate channel layout from the decoder */
1204 if (avctx->channel_layout) {
1205 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1206 if (!avctx->channels)
1207 avctx->channels = channels;
1208 else if (channels != avctx->channels) {
1209 av_log(avctx, AV_LOG_WARNING,
1210 "channel layout does not match number of channels\n");
1211 avctx->channel_layout = 0;
1214 if (avctx->channels && avctx->channels < 0 ||
1215 avctx->channels > FF_SANE_NB_CHANNELS) {
1216 ret = AVERROR(EINVAL);
1221 entangled_thread_counter--;
1223 /* Release any user-supplied mutex. */
1225 (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1228 av_dict_free(options);
1235 av_freep(&avctx->priv_data);
1236 if (avctx->internal) {
1237 av_frame_free(&avctx->internal->to_free);
1238 av_freep(&avctx->internal->pool);
1240 av_freep(&avctx->internal);
1241 avctx->codec = NULL;
1245 int ff_alloc_packet(AVPacket *avpkt, int size)
1247 if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
1248 return AVERROR(EINVAL);
1251 AVBufferRef *buf = avpkt->buf;
1252 #if FF_API_DESTRUCT_PACKET
1253 FF_DISABLE_DEPRECATION_WARNINGS
1254 void *destruct = avpkt->destruct;
1255 FF_ENABLE_DEPRECATION_WARNINGS
1258 if (avpkt->size < size)
1259 return AVERROR(EINVAL);
1261 av_init_packet(avpkt);
1262 #if FF_API_DESTRUCT_PACKET
1263 FF_DISABLE_DEPRECATION_WARNINGS
1264 avpkt->destruct = destruct;
1265 FF_ENABLE_DEPRECATION_WARNINGS
1271 return av_new_packet(avpkt, size);
1276 * Pad last frame with silence.
1278 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1280 AVFrame *frame = NULL;
1283 if (!(frame = av_frame_alloc()))
1284 return AVERROR(ENOMEM);
1286 frame->format = src->format;
1287 frame->channel_layout = src->channel_layout;
1288 frame->nb_samples = s->frame_size;
1289 ret = av_frame_get_buffer(frame, 32);
1293 ret = av_frame_copy_props(frame, src);
1297 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1298 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1300 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1301 frame->nb_samples - src->nb_samples,
1302 s->channels, s->sample_fmt)) < 0)
1310 av_frame_free(&frame);
1314 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1316 const AVFrame *frame,
1317 int *got_packet_ptr)
1320 AVFrame *padded_frame = NULL;
1322 int user_packet = !!avpkt->data;
1324 *got_packet_ptr = 0;
1326 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1327 av_free_packet(avpkt);
1328 av_init_packet(avpkt);
1332 /* ensure that extended_data is properly set */
1333 if (frame && !frame->extended_data) {
1334 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1335 avctx->channels > AV_NUM_DATA_POINTERS) {
1336 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1337 "with more than %d channels, but extended_data is not set.\n",
1338 AV_NUM_DATA_POINTERS);
1339 return AVERROR(EINVAL);
1341 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1344 tmp.extended_data = tmp.data;
1348 /* check for valid frame size */
1350 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1351 if (frame->nb_samples > avctx->frame_size)
1352 return AVERROR(EINVAL);
1353 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1354 if (frame->nb_samples < avctx->frame_size &&
1355 !avctx->internal->last_audio_frame) {
1356 ret = pad_last_frame(avctx, &padded_frame, frame);
1360 frame = padded_frame;
1361 avctx->internal->last_audio_frame = 1;
1364 if (frame->nb_samples != avctx->frame_size) {
1365 ret = AVERROR(EINVAL);
1371 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1373 if (*got_packet_ptr) {
1374 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1375 if (avpkt->pts == AV_NOPTS_VALUE)
1376 avpkt->pts = frame->pts;
1377 if (!avpkt->duration)
1378 avpkt->duration = ff_samples_to_time_base(avctx,
1381 avpkt->dts = avpkt->pts;
1386 if (!user_packet && avpkt->size) {
1387 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1389 avpkt->data = avpkt->buf->data;
1392 avctx->frame_number++;
1395 if (ret < 0 || !*got_packet_ptr) {
1396 av_free_packet(avpkt);
1397 av_init_packet(avpkt);
1401 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1402 * this needs to be moved to the encoders, but for now we can do it
1403 * here to simplify things */
1404 avpkt->flags |= AV_PKT_FLAG_KEY;
1407 av_frame_free(&padded_frame);
1412 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1414 const AVFrame *frame,
1415 int *got_packet_ptr)
1418 int user_packet = !!avpkt->data;
1420 *got_packet_ptr = 0;
1422 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1423 av_free_packet(avpkt);
1424 av_init_packet(avpkt);
1429 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1430 return AVERROR(EINVAL);
1432 av_assert0(avctx->codec->encode2);
1434 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1436 if (!*got_packet_ptr)
1438 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1439 avpkt->pts = avpkt->dts = frame->pts;
1441 if (!user_packet && avpkt->size) {
1442 ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1444 avpkt->data = avpkt->buf->data;
1447 avctx->frame_number++;
1450 if (ret < 0 || !*got_packet_ptr)
1451 av_free_packet(avpkt);
1457 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1458 const AVSubtitle *sub)
1461 if (sub->start_display_time) {
1462 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1465 if (sub->num_rects == 0 || !sub->rects)
1467 ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1468 avctx->frame_number++;
1472 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1475 const uint8_t *data;
1478 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1482 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
1483 av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
1484 "changes, but PARAM_CHANGE side data was sent to it.\n");
1485 return AVERROR(EINVAL);
1491 flags = bytestream_get_le32(&data);
1494 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1497 avctx->channels = bytestream_get_le32(&data);
1500 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1503 avctx->channel_layout = bytestream_get_le64(&data);
1506 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1509 avctx->sample_rate = bytestream_get_le32(&data);
1512 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1515 avctx->width = bytestream_get_le32(&data);
1516 avctx->height = bytestream_get_le32(&data);
1518 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1525 av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
1526 return AVERROR_INVALIDDATA;
1529 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
1533 /* move the original frame to our backup */
1534 av_frame_unref(avci->to_free);
1535 av_frame_move_ref(avci->to_free, frame);
1537 /* now copy everything except the AVBufferRefs back
1538 * note that we make a COPY of the side data, so calling av_frame_free() on
1539 * the caller's frame will work properly */
1540 ret = av_frame_copy_props(frame, avci->to_free);
1544 memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
1545 memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
1546 if (avci->to_free->extended_data != avci->to_free->data) {
1547 int planes = av_get_channel_layout_nb_channels(avci->to_free->channel_layout);
1548 int size = planes * sizeof(*frame->extended_data);
1551 av_frame_unref(frame);
1555 frame->extended_data = av_malloc(size);
1556 if (!frame->extended_data) {
1557 av_frame_unref(frame);
1558 return AVERROR(ENOMEM);
1560 memcpy(frame->extended_data, avci->to_free->extended_data,
1563 frame->extended_data = frame->data;
1565 frame->format = avci->to_free->format;
1566 frame->width = avci->to_free->width;
1567 frame->height = avci->to_free->height;
1568 frame->channel_layout = avci->to_free->channel_layout;
1569 frame->nb_samples = avci->to_free->nb_samples;
1574 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1575 int *got_picture_ptr,
1578 AVCodecInternal *avci = avctx->internal;
1581 *got_picture_ptr = 0;
1582 if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1585 avctx->internal->pkt = avpkt;
1586 ret = apply_param_change(avctx, avpkt);
1588 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1589 if (avctx->err_recognition & AV_EF_EXPLODE)
1593 av_frame_unref(picture);
1595 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
1596 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1597 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1600 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1602 picture->pkt_dts = avpkt->dts;
1603 /* get_buffer is supposed to set frame parameters */
1604 if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
1605 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1606 picture->width = avctx->width;
1607 picture->height = avctx->height;
1608 picture->format = avctx->pix_fmt;
1612 emms_c(); //needed to avoid an emms_c() call before every return;
1614 if (*got_picture_ptr) {
1615 if (!avctx->refcounted_frames) {
1616 int err = unrefcount_frame(avci, picture);
1621 avctx->frame_number++;
1623 av_frame_unref(picture);
1630 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1635 AVCodecInternal *avci = avctx->internal;
1640 avctx->internal->pkt = avpkt;
1642 if (!avpkt->data && avpkt->size) {
1643 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1644 return AVERROR(EINVAL);
1647 ret = apply_param_change(avctx, avpkt);
1649 av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1650 if (avctx->err_recognition & AV_EF_EXPLODE)
1654 av_frame_unref(frame);
1656 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1657 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1658 if (ret >= 0 && *got_frame_ptr) {
1659 avctx->frame_number++;
1660 frame->pkt_dts = avpkt->dts;
1661 if (frame->format == AV_SAMPLE_FMT_NONE)
1662 frame->format = avctx->sample_fmt;
1664 if (!avctx->refcounted_frames) {
1665 int err = unrefcount_frame(avci, frame);
1670 av_frame_unref(frame);
1677 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1683 avctx->internal->pkt = avpkt;
1685 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1687 avctx->frame_number++;
1691 void avsubtitle_free(AVSubtitle *sub)
1695 for (i = 0; i < sub->num_rects; i++) {
1696 av_freep(&sub->rects[i]->pict.data[0]);
1697 av_freep(&sub->rects[i]->pict.data[1]);
1698 av_freep(&sub->rects[i]->pict.data[2]);
1699 av_freep(&sub->rects[i]->pict.data[3]);
1700 av_freep(&sub->rects[i]->text);
1701 av_freep(&sub->rects[i]->ass);
1702 av_freep(&sub->rects[i]);
1705 av_freep(&sub->rects);
1707 memset(sub, 0, sizeof(AVSubtitle));
1710 av_cold int avcodec_close(AVCodecContext *avctx)
1712 if (avcodec_is_open(avctx)) {
1713 FramePool *pool = avctx->internal->pool;
1715 if (HAVE_THREADS && avctx->internal->thread_ctx)
1716 ff_thread_free(avctx);
1717 if (avctx->codec && avctx->codec->close)
1718 avctx->codec->close(avctx);
1719 avctx->coded_frame = NULL;
1720 av_frame_free(&avctx->internal->to_free);
1721 for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1722 av_buffer_pool_uninit(&pool->pools[i]);
1723 av_freep(&avctx->internal->pool);
1725 if (avctx->hwaccel && avctx->hwaccel->uninit)
1726 avctx->hwaccel->uninit(avctx);
1727 av_freep(&avctx->internal->hwaccel_priv_data);
1729 av_freep(&avctx->internal);
1732 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1733 av_opt_free(avctx->priv_data);
1735 av_freep(&avctx->priv_data);
1736 if (av_codec_is_encoder(avctx->codec))
1737 av_freep(&avctx->extradata);
1738 avctx->codec = NULL;
1739 avctx->active_thread_type = 0;
1744 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
1746 AVCodec *p, *experimental = NULL;
1749 if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
1751 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1758 return experimental;
1761 AVCodec *avcodec_find_encoder(enum AVCodecID id)
1763 return find_encdec(id, 1);
1766 AVCodec *avcodec_find_encoder_by_name(const char *name)
1773 if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
1780 AVCodec *avcodec_find_decoder(enum AVCodecID id)
1782 return find_encdec(id, 0);
1785 AVCodec *avcodec_find_decoder_by_name(const char *name)
1792 if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
1799 static int get_bit_rate(AVCodecContext *ctx)
1802 int bits_per_sample;
1804 switch (ctx->codec_type) {
1805 case AVMEDIA_TYPE_VIDEO:
1806 case AVMEDIA_TYPE_DATA:
1807 case AVMEDIA_TYPE_SUBTITLE:
1808 case AVMEDIA_TYPE_ATTACHMENT:
1809 bit_rate = ctx->bit_rate;
1811 case AVMEDIA_TYPE_AUDIO:
1812 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1813 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1822 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1824 int i, len, ret = 0;
1826 #define TAG_PRINT(x) \
1827 (((x) >= '0' && (x) <= '9') || \
1828 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1829 ((x) == '.' || (x) == ' '))
1831 for (i = 0; i < 4; i++) {
1832 len = snprintf(buf, buf_size,
1833 TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
1835 buf_size = buf_size > len ? buf_size - len : 0;
1842 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1844 const char *codec_name;
1845 const char *profile = NULL;
1849 AVRational display_aspect_ratio;
1854 p = avcodec_find_encoder(enc->codec_id);
1856 p = avcodec_find_decoder(enc->codec_id);
1859 codec_name = p->name;
1860 profile = av_get_profile_name(p, enc->profile);
1861 } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
1862 /* fake mpeg2 transport stream codec (currently not
1864 codec_name = "mpeg2ts";
1866 /* output avi tags */
1868 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1869 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
1873 switch (enc->codec_type) {
1874 case AVMEDIA_TYPE_VIDEO:
1875 snprintf(buf, buf_size,
1877 codec_name, enc->mb_decision ? " (hq)" : "");
1879 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1881 if (enc->pix_fmt != AV_PIX_FMT_NONE) {
1882 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1884 av_get_pix_fmt_name(enc->pix_fmt));
1887 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1889 enc->width, enc->height);
1890 if (enc->sample_aspect_ratio.num) {
1891 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1892 enc->width * enc->sample_aspect_ratio.num,
1893 enc->height * enc->sample_aspect_ratio.den,
1895 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1896 " [PAR %d:%d DAR %d:%d]",
1897 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1898 display_aspect_ratio.num, display_aspect_ratio.den);
1900 if (av_log_get_level() >= AV_LOG_DEBUG) {
1901 int g = av_gcd(enc->time_base.num, enc->time_base.den);
1902 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1904 enc->time_base.num / g, enc->time_base.den / g);
1908 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1909 ", q=%d-%d", enc->qmin, enc->qmax);
1912 case AVMEDIA_TYPE_AUDIO:
1913 snprintf(buf, buf_size,
1917 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1919 if (enc->sample_rate) {
1920 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1921 ", %d Hz", enc->sample_rate);
1923 av_strlcat(buf, ", ", buf_size);
1924 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1925 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1926 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1927 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1930 case AVMEDIA_TYPE_DATA:
1931 snprintf(buf, buf_size, "Data: %s", codec_name);
1933 case AVMEDIA_TYPE_SUBTITLE:
1934 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1936 case AVMEDIA_TYPE_ATTACHMENT:
1937 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1940 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1944 if (enc->flags & CODEC_FLAG_PASS1)
1945 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1947 if (enc->flags & CODEC_FLAG_PASS2)
1948 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1951 bitrate = get_bit_rate(enc);
1953 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1954 ", %d kb/s", bitrate / 1000);
1958 const char *av_get_profile_name(const AVCodec *codec, int profile)
1961 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1964 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1965 if (p->profile == profile)
1971 unsigned avcodec_version(void)
1973 return LIBAVCODEC_VERSION_INT;
1976 const char *avcodec_configuration(void)
1978 return LIBAV_CONFIGURATION;
1981 const char *avcodec_license(void)
1983 #define LICENSE_PREFIX "libavcodec license: "
1984 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1987 void avcodec_flush_buffers(AVCodecContext *avctx)
1989 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1990 ff_thread_flush(avctx);
1991 else if (avctx->codec->flush)
1992 avctx->codec->flush(avctx);
1994 if (!avctx->refcounted_frames)
1995 av_frame_unref(avctx->internal->to_free);
1998 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
2001 case AV_CODEC_ID_ADPCM_CT:
2002 case AV_CODEC_ID_ADPCM_IMA_APC:
2003 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
2004 case AV_CODEC_ID_ADPCM_IMA_WS:
2005 case AV_CODEC_ID_ADPCM_G722:
2006 case AV_CODEC_ID_ADPCM_YAMAHA:
2008 case AV_CODEC_ID_PCM_ALAW:
2009 case AV_CODEC_ID_PCM_MULAW:
2010 case AV_CODEC_ID_PCM_S8:
2011 case AV_CODEC_ID_PCM_U8:
2012 case AV_CODEC_ID_PCM_ZORK:
2014 case AV_CODEC_ID_PCM_S16BE:
2015 case AV_CODEC_ID_PCM_S16LE:
2016 case AV_CODEC_ID_PCM_S16LE_PLANAR:
2017 case AV_CODEC_ID_PCM_U16BE:
2018 case AV_CODEC_ID_PCM_U16LE:
2020 case AV_CODEC_ID_PCM_S24DAUD:
2021 case AV_CODEC_ID_PCM_S24BE:
2022 case AV_CODEC_ID_PCM_S24LE:
2023 case AV_CODEC_ID_PCM_S24LE_PLANAR:
2024 case AV_CODEC_ID_PCM_U24BE:
2025 case AV_CODEC_ID_PCM_U24LE:
2027 case AV_CODEC_ID_PCM_S32BE:
2028 case AV_CODEC_ID_PCM_S32LE:
2029 case AV_CODEC_ID_PCM_S32LE_PLANAR:
2030 case AV_CODEC_ID_PCM_U32BE:
2031 case AV_CODEC_ID_PCM_U32LE:
2032 case AV_CODEC_ID_PCM_F32BE:
2033 case AV_CODEC_ID_PCM_F32LE:
2035 case AV_CODEC_ID_PCM_F64BE:
2036 case AV_CODEC_ID_PCM_F64LE:
2043 int av_get_bits_per_sample(enum AVCodecID codec_id)
2046 case AV_CODEC_ID_ADPCM_SBPRO_2:
2048 case AV_CODEC_ID_ADPCM_SBPRO_3:
2050 case AV_CODEC_ID_ADPCM_SBPRO_4:
2051 case AV_CODEC_ID_ADPCM_IMA_WAV:
2052 case AV_CODEC_ID_ADPCM_IMA_QT:
2053 case AV_CODEC_ID_ADPCM_SWF:
2054 case AV_CODEC_ID_ADPCM_MS:
2057 return av_get_exact_bits_per_sample(codec_id);
2061 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
2063 int id, sr, ch, ba, tag, bps;
2065 id = avctx->codec_id;
2066 sr = avctx->sample_rate;
2067 ch = avctx->channels;
2068 ba = avctx->block_align;
2069 tag = avctx->codec_tag;
2070 bps = av_get_exact_bits_per_sample(avctx->codec_id);
2072 /* codecs with an exact constant bits per sample */
2073 if (bps > 0 && ch > 0 && frame_bytes > 0)
2074 return (frame_bytes * 8) / (bps * ch);
2075 bps = avctx->bits_per_coded_sample;
2077 /* codecs with a fixed packet duration */
2079 case AV_CODEC_ID_ADPCM_ADX: return 32;
2080 case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
2081 case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
2082 case AV_CODEC_ID_AMR_NB:
2083 case AV_CODEC_ID_GSM:
2084 case AV_CODEC_ID_QCELP:
2085 case AV_CODEC_ID_RA_144:
2086 case AV_CODEC_ID_RA_288: return 160;
2087 case AV_CODEC_ID_IMC: return 256;
2088 case AV_CODEC_ID_AMR_WB:
2089 case AV_CODEC_ID_GSM_MS: return 320;
2090 case AV_CODEC_ID_MP1: return 384;
2091 case AV_CODEC_ID_ATRAC1: return 512;
2092 case AV_CODEC_ID_ATRAC3: return 1024;
2093 case AV_CODEC_ID_MP2:
2094 case AV_CODEC_ID_MUSEPACK7: return 1152;
2095 case AV_CODEC_ID_AC3: return 1536;
2099 /* calc from sample rate */
2100 if (id == AV_CODEC_ID_TTA)
2101 return 256 * sr / 245;
2104 /* calc from sample rate and channels */
2105 if (id == AV_CODEC_ID_BINKAUDIO_DCT)
2106 return (480 << (sr / 22050)) / ch;
2111 /* calc from block_align */
2112 if (id == AV_CODEC_ID_SIPR) {
2114 case 20: return 160;
2115 case 19: return 144;
2116 case 29: return 288;
2117 case 37: return 480;
2119 } else if (id == AV_CODEC_ID_ILBC) {
2121 case 38: return 160;
2122 case 50: return 240;
2127 if (frame_bytes > 0) {
2128 /* calc from frame_bytes only */
2129 if (id == AV_CODEC_ID_TRUESPEECH)
2130 return 240 * (frame_bytes / 32);
2131 if (id == AV_CODEC_ID_NELLYMOSER)
2132 return 256 * (frame_bytes / 64);
2135 /* calc from frame_bytes and bits_per_coded_sample */
2136 if (id == AV_CODEC_ID_ADPCM_G726)
2137 return frame_bytes * 8 / bps;
2141 /* calc from frame_bytes and channels */
2143 case AV_CODEC_ID_ADPCM_4XM:
2144 case AV_CODEC_ID_ADPCM_IMA_ISS:
2145 return (frame_bytes - 4 * ch) * 2 / ch;
2146 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
2147 return (frame_bytes - 4) * 2 / ch;
2148 case AV_CODEC_ID_ADPCM_IMA_AMV:
2149 return (frame_bytes - 8) * 2 / ch;
2150 case AV_CODEC_ID_ADPCM_XA:
2151 return (frame_bytes / 128) * 224 / ch;
2152 case AV_CODEC_ID_INTERPLAY_DPCM:
2153 return (frame_bytes - 6 - ch) / ch;
2154 case AV_CODEC_ID_ROQ_DPCM:
2155 return (frame_bytes - 8) / ch;
2156 case AV_CODEC_ID_XAN_DPCM:
2157 return (frame_bytes - 2 * ch) / ch;
2158 case AV_CODEC_ID_MACE3:
2159 return 3 * frame_bytes / ch;
2160 case AV_CODEC_ID_MACE6:
2161 return 6 * frame_bytes / ch;
2162 case AV_CODEC_ID_PCM_LXF:
2163 return 2 * (frame_bytes / (5 * ch));
2167 /* calc from frame_bytes, channels, and codec_tag */
2168 if (id == AV_CODEC_ID_SOL_DPCM) {
2170 return frame_bytes / ch;
2172 return frame_bytes * 2 / ch;
2177 /* calc from frame_bytes, channels, and block_align */
2178 int blocks = frame_bytes / ba;
2179 switch (avctx->codec_id) {
2180 case AV_CODEC_ID_ADPCM_IMA_WAV:
2181 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2182 case AV_CODEC_ID_ADPCM_IMA_DK3:
2183 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2184 case AV_CODEC_ID_ADPCM_IMA_DK4:
2185 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2186 case AV_CODEC_ID_ADPCM_MS:
2187 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2192 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2193 switch (avctx->codec_id) {
2194 case AV_CODEC_ID_PCM_DVD:
2195 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2196 case AV_CODEC_ID_PCM_BLURAY:
2197 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2198 case AV_CODEC_ID_S302M:
2199 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2209 int ff_thread_init(AVCodecContext *s)
2216 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2230 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2233 for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2237 #if FF_API_MISSING_SAMPLE
2238 FF_DISABLE_DEPRECATION_WARNINGS
2239 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2241 av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your Libav "
2242 "version to the newest one from Git. If the problem still "
2243 "occurs, it means that your file has a feature which has not "
2244 "been implemented.\n", feature);
2246 av_log_ask_for_sample(avc, NULL);
2249 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2251 va_list argument_list;
2253 va_start(argument_list, msg);
2256 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2257 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2258 "of this file to ftp://upload.libav.org/incoming/ "
2259 "and contact the libav-devel mailing list.\n");
2261 va_end(argument_list);
2263 FF_ENABLE_DEPRECATION_WARNINGS
2264 #endif /* FF_API_MISSING_SAMPLE */
2266 static AVHWAccel *first_hwaccel = NULL;
2268 void av_register_hwaccel(AVHWAccel *hwaccel)
2270 AVHWAccel **p = &first_hwaccel;
2274 hwaccel->next = NULL;
2277 AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
2279 return hwaccel ? hwaccel->next : first_hwaccel;
2282 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2285 if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
2287 if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
2294 if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
2296 if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
2302 int avpriv_lock_avformat(void)
2305 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2311 int avpriv_unlock_avformat(void)
2314 if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2320 unsigned int avpriv_toupper4(unsigned int x)
2322 return av_toupper(x & 0xFF) +
2323 (av_toupper((x >> 8) & 0xFF) << 8) +
2324 (av_toupper((x >> 16) & 0xFF) << 16) +
2325 (av_toupper((x >> 24) & 0xFF) << 24);
2328 int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
2332 dst->owner = src->owner;
2334 ret = av_frame_ref(dst->f, src->f);
2338 if (src->progress &&
2339 !(dst->progress = av_buffer_ref(src->progress))) {
2340 ff_thread_release_buffer(dst->owner, dst);
2341 return AVERROR(ENOMEM);
2349 int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
2352 return ff_get_buffer(avctx, f->f, flags);
2355 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
2358 av_frame_unref(f->f);
2361 void ff_thread_finish_setup(AVCodecContext *avctx)
2365 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
2369 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
2375 enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
2377 if (codec_id <= AV_CODEC_ID_NONE)
2378 return AVMEDIA_TYPE_UNKNOWN;
2379 else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
2380 return AVMEDIA_TYPE_VIDEO;
2381 else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
2382 return AVMEDIA_TYPE_AUDIO;
2383 else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
2384 return AVMEDIA_TYPE_SUBTITLE;
2386 return AVMEDIA_TYPE_UNKNOWN;
2389 int avcodec_is_open(AVCodecContext *s)
2391 return !!s->internal;
2394 const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
2396 uint32_t * restrict state)
2404 for (i = 0; i < 3; i++) {
2405 uint32_t tmp = *state << 8;
2406 *state = tmp + *(p++);
2407 if (tmp == 0x100 || p == end)
2412 if (p[-1] > 1 ) p += 3;
2413 else if (p[-2] ) p += 2;
2414 else if (p[-3]|(p[-1]-1)) p++;
2421 p = FFMIN(p, end) - 4;
2422 *state = AV_RB32(p);